import numpy as np
print([1,2,3]*2)
list = list(range(1,3))
print(list)
# a = np.arange(1, 3)
# print(np.size(a))
# b =
# print(np.diag(a))

print(np.arange(1,3))
a = np.mat([[1],[2]])
aa = a.reshape((1,-1))
ab = np.array(aa)
b = np.array([3,4])
print(a)
print(ab)
print(b)
print(ab*b)